refactor: 消息模块重构，infra包路径简写等

server/internal/db/infra/persistence/db_sql.go

@@ -0,0 +1,15 @@
+package persistence
+
+import (
+	"mayfly-go/internal/db/domain/entity"
+	"mayfly-go/internal/db/domain/repository"
+	"mayfly-go/pkg/base"
+)
+
+type dbSqlRepoImpl struct {
+	base.RepoImpl[*entity.DbSql]
+}
+
+func newDbSqlRepo() repository.DbSql {
+	return &dbSqlRepoImpl{}
+}